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干白素-1受体辅助蛋白质阻塞限制了动脉样硬化发展,并减少了斑块炎症
Megan Mulholland1, Marie A C Depuydt2, Gabriel Jakobsson3
1Department of Clinical Sciences, Cardiovascular Research-Immune Regulation, Lund University, Malmö, Sweden.
Cardiovascular research
|April 2, 2024
概括
在小鼠中阻断介质素-1受体辅助蛋白 (IL1RAP) 降低了动脉样硬化斑块大小和炎症. 这种方法可能会限制化学激素的产生,为心血管疾病提供新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
背景情况:
- 介素-1受体辅助蛋白 (IL1RAP) 对于通过IL-1,IL-33和IL-36受体传递信号至关重要.
- 动脉样硬化涉及复杂的炎症过程,其中IL1RAP可能发挥重要作用.
研究的目的:
- 为了研究IL1RAP在动脉样硬化中的作用,使用一种新的阻断抗体.
- 为了确定IL1RAP阻断是否可以减少斑块负担和炎症.
主要方法:
- 单细胞RNA测序和人类动脉样硬化斑块的组织学分析.
- 在小鼠动脉样动脉上进行流细胞计,以确定IL1RAP表达细胞.
- 用抗IL1RAP抗体或同型控制治疗阿波利波蛋白E缺乏的小鼠.
- 在体外研究评估细胞因子诱导的化学因子释放和IL1RAP阻断的影响.
主要成果:
- IL1RAP,IL1B和IL33在人类动脉样硬化斑块中表达;IL1RAP存在于小鼠的斑块白细胞中.
- 在小鼠中,抗IL1RAP抗体治疗减少了20%的斑块大小.
- IL1RAP阻断降低了中性粒细胞,单细胞/巨细胞和T细胞在斑块和冒险细胞中的积累.
- 在接受治疗的小鼠中,白细胞招募基因 (Cxcl1,Cxcl2) 的表达减少;IL-1,IL-33和IL-36诱导CXCL1从巨细胞和纤维细胞释放,通过IL1RAP阻塞减轻.
结论:
- 准依赖IL1RAP的细胞因子信号通路有效地减少了小鼠的动脉样硬化斑块负担和炎症.
- IL1RAP阻塞可以通过限制动脉样硬化病变内的化学激素产生来发挥其作用.
- 这项研究强调IL1RAP作为动脉样硬化的潜在治疗标.
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